Since I am 0 for 3 on running motors with my carb setup (just bad luck with the motors not the carb) I am thinking this time around I'd like to just buy a motor the way it would come in the car and run it with the fuel injection (plus this way I can run a turbo as well and kill 2 birds with one stone). My questions are; which stand alone ECU will be easiest to setup for a sandrail, and what stock parts will I need (i.e. sensors, harness, etc.)? I have tried looking around, but haven't really found much that would apply for what I'm trying to do. I am not looking to go crazy with power, just stock with much shorter exhaust and probably no muffler (though any suggestions that might get me a bit more power would also be appreciated, I am trying to keep it between 200-250hp so my transmission doesn't blow apart). I have my eyes on a Series 5, but I will be paying a few hundred more than I would for an S4, or I could step up to an S6 twin turbo for a few hundred more than that if it would be worthwhile.